Transmission-case cover



Apr; 10, 1923.

. H. E. MIEBACH ET AL TRANSMISSION CASE COVER Original Filed Oct. 1 1920Patented Apr. 10, 1923.

NETEE STATES PATENT @FiiCB HARRY E. MIEBACH AND ARNOTT S. CAUGHEY, OFLETHBRIDGE, ALBERTA, CANADA.

TRANSMISSION-CASE COVER.

Original application filed October 1, 1920, Serial No. 414,100. Dividedand this application filed Novemher 16, 1921.

To all whom it may concern:

Be it known that we, HARRY E. MIEBACH and AnNo'rr S. CAUGI-IEY, citizensof the United States, residing at Lethbridge, in

the Province of Alberta, Dominion of Canada, have invented certain newand use ful, Improvements in Transmission-Case Covers, of which thefollowing is a specification.

This invention relates to an improved transmission case cover for motorvehicles, being a division of our pending application for transmissionband and case cover,.filed October 1, 1920, Serial No. 414,100.

The invention has as one of its principal objects to provide atransmission case cover of such construction that the vehicletransmission bands may be displaced with- 1 out the necessity forremoving the cover.

And the invention has as afurther object to provide a constructionwherein the transmission cover will be equipped with a door throughwhich the transmission bands may be readily reached and removed.

Other and incidental objects will appear hereinafter.

, In the drawing:

Figure 1 is a perspective view showing the cover of a transmission caseembodying the present invention,

Figure 2 is a transverse section through the side door employed upon thecover, and

Figure 3 is a perspective view showing the cover in detail.

The present invention is particularly designed for use in connectionwith vehicles of Ford design and in Figure 1 of the drawing, an engineof this type of vehicle is indicated at 10. In the rear of the engine isthe transmission enclosed by a transmission case including a cover 11.This cover as now produced is provided with a top door 12 secured by aplurality of cap screws. As is well known, the transmission includes aplurality of drums about which are arranged transmission bands, threebands in all being employed. These bands are tightened about the drumsby foot pedals 18, one pedal operating each band. From each pedalextends a pedal shaft through one side wall of the transmission coverand at their inner end portions these shafts are operatively coupledwith the transmission bands. For this purpose, said bands are each, in55 accordance with present practice, equipped Serial No. 515,852.

at their ends with a pair of ear irons through which the pedal shaftsfreely extend. These ear irons are riveted to the bands and when thebands are being removed, prevent the bands from being pulled endwisefromjfi around the drums. It accordingly becomes necessary, underpresent conditions, to remove the transmission cover in order to effeetdisplacement of the bands. In accordance with the improvements shown inour 6 prior application, of which the present application is a division,we provide transmission bands 14 carrying permanent ear irons l5 anddetachable ear irons 18. Since the manner in which the ear irons 18 areremovably secured to the bands does not concern the present invention,these features are not brought out, it being sufficient. for a properunderstanding of the present invention to state that. the-ear irons 18may be readily detached. The ear irons 15- and i 18, are, of course,formed to coact with the shafts of the pedals 13 "so that when thetransmission bands are in place, the pedals may be operated in the usualmanner for contracting the bands. l

, it the side thereof opposite the pedals 13, the transmission cover 11is formed with a door opening about one side and the bottom of which areformed outwardly directed flanges 23. At the opposite side of saidopening is a beveled wall 24 and normally closing the opening is a sidedoor 25. As best shown in Figure 2 of the drawing, this door is formedat one side and along its lower edge with flanges 26 mating withtheflanges 28 and engaging through said flanges are pairs of cap screws 27.t its opposite side, the door is formed with a beveled edge mating withthe beveled wall 24 of the door opening and engaging throughthe adjacentmargin of the door and through said wall is a pair of cap screws 28. Agasket is preferably arranged between the flanges 23 and 26 as well asbetween the beveled edge of the door and the wall 24'so that, as will beseen, the pair of cap screws 28 may be adjusted for shifting the door totightly bind against the gasket, the openings in the lowermost of thedoor flanges as well as the openings inthe door for the cap screws 28being slightly elongated to permit of lateral shift ing of the door. Atits upper edge the door is formed with a flange 29 mating with the usualflange upon the transmission cover for the top door 12so that after thedoor has been secured in place, the door 12 may be applied. Threadedthrough the door 25 is the usual low speed adjusting screw carrying thecustomary lock nut 81.

As will now be readily understood in view of the preceding description,the door 12 be; displaced when, by removing the door 25, access may bereadily had to the ear irons 18. Then, by removing the nuts, washeisand'springs upon the pedal. shafts, theear irons maybe detached: This done,thetfransmission bands mam simply be drawn end'wisefrom aroundithe drumsof; the trans.- mission through the side door opening ofv thetransmission cover. We accordingly provide an arrangement-1 whereby, aswill be seen, thetransmission bandsKmay be easily and; quickly removed;and, of course, the bandsimay aseasily be again applied. Further,removal and replacement of the trans? mission bands may be accomplishedwithout displacing the transmission cover. Threaded intothe upperedge ofthe side door 25 through thetop door 12, are spaced cap screwsBQ, for;additionally, bracing the side doom Having thus described the invention,what is claimed as new isz 1;. In a transmission cover having a topdoor; opening, and atop doorynormally closi g aid-opening, a side dooropening in the cover merging at: its top in the side of thetop-vdoorg-opening, the coverbeing provided with flanges on .the bottomand irea'r; side wall.

of the side door opening, aaside door closing the side door opening andhaving outwardly projecting flanges mating with the, flanges on thebottom and rear side wall of the side door opening, means engagedthrough said. flanges securing the side door in position, the side doorbeing provided at its top edge with an inwardly projecting flange engaging under the edge of, the top door, the;

2. In a transmission cover having a top.

door opening, and a top door normally. clos- 1ng:sa1d-open1ng, asidedoor opening inithe inserted cover having abeveled side wall, aisidedoor normally closing the latter opening and provided with a, beveledend edge to coact. vith said! Wall, and: means connecting. the

side door. with the cover and: adjustableto ride the beveled edge ofthecover against" saidv beveled wall: whereby to bind the op positeendedge and the bOttOIlirOfthe side.

door closed against the'mating-side-wall and bottom of theside dooropening.

In testimony whereofa they aflix their signatures.

HARRY E. MI-BEACH.

[14s.] ARNOTT S. CAUGHEY.

